Alert archive / Tennessee / Mesoscale Discussions in 2020
Mesoscale Discussion 267
The Storm Prediction Center issued this mesoscale discussion at Mar 29, 2020, 1:50 AM CDT for 4 states. It was in force for 85 min.
The area
The outline as issued.
The facts
- Issued
- Mar 29, 2020, 1:50 AM CDT (06:50 UTC)
- Expired
- Mar 29, 2020, 3:15 AM CDT
- In force
- 85 min
- Issued by
- the Storm Prediction Center
All 40 counties
Jackson County, AL, Lawrence County, AL, Limestone County, AL, Madison County, AL, Dade County, GA, Clinton County, KY, Wayne County, KY, Bedford County, TN, Bledsoe County, TN, Cannon County, TN, Clay County, TN, Coffee County, TN, Cumberland County, TN, DeKalb County, TN, Fentress County, TN, Franklin County, TN, Giles County, TN, Grundy County, TN, Hamilton County, TN, Jackson County, TN, Lincoln County, TN, Marion County, TN, Marshall County, TN, McMinn County, TN, Meigs County, TN, Moore County, TN, Morgan County, TN, Overton County, TN, Pickett County, TN, Putnam County, TN, Rhea County, TN, Roane County, TN, Rutherford County, TN, Scott County, TN, Sequatchie County, TN, Smith County, TN, Van Buren County, TN, Warren County, TN, White County, TN, Wilson County, TN
The radar
The Nashville radar (KOHX), 93 km from the middle of the area, began a volume at 06:51 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 00:00Z, 6.8 hours before the alert went out and 89 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 251 J/kg
- Mixed-layer CIN
- -107 J/kg
- Mixed-layer LCL
- 1430 m above ground
- 0-6 km bulk shear
- 71 kt
- 0-1 km storm-relative helicity
- 132 m²/s²
- 0-3 km storm-relative helicity
- 206 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.5
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 28, 8:25 PM CDT | Mesoscale Discussion | SPC | Colbert, Franklin, Lauderdale, Lawrence, Marion | 95 min |
| Mar 28, 9:58 PM CDT | Tornado Watch | SPC | Blount, Colbert, Cullman, DeKalb, Fayette, Franklin and 16 more | 7 hr |
| Mar 28, 11:27 PM CDT | Mesoscale Discussion | SPC | Colbert, Franklin, Lamar, Lauderdale, Lawrence, Limestone and 2 more | 93 min |
| Mar 29, 2:17 AM CDT | Mesoscale Discussion | SPC | Blount, Cullman, Fayette, Jefferson, Lamar, Marion and 4 more | 88 min |
| Mar 28, 7:38 PM CDT | Mesoscale Discussion | SPC | Breckinridge, Bullitt, Butler, Caldwell, Christian, Daviess and 13 more | 67 min |
| Mar 28, 8:15 PM CDT | Tornado Watch | SPC | Adair, Allen, Anderson, Barren, Boyle, Breckinridge and 31 more | 6 hr |
| Mar 28, 10:34 PM CDT | Mesoscale Discussion | SPC | Adair, Anderson, Barren, Boone, Bourbon, Boyle and 42 more | 86 min |
| Mar 28, 9:34 PM CDT | Tornado Watch | SPC | Bedford, Cannon, Cheatham, Clay, Coffee, Cumberland and 28 more | 6 hr |
Nearby
Mesoscale Discussions in Tennessee, 2020Mesoscale Discussions in Alabama, 2020Mesoscale Discussions in Kentucky, 2020Every mesoscale discussion in 2020
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.